pankaj mishra created CASSANDRA-9578:
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Summary: CPU hogging by cassandra while starting.
Key: CASSANDRA-9578
URL: https://issues.apache.org/jira/browse/CASSANDRA-9578
Project: Cassandra
Issue Type: Bug
Reporter: pankaj mishra
The problem we experience is that just after starting cassandra, the cpu
utilization by java program (cassandra service) increases insanely (100-300%)
and cassandra server startup process gets delayed forever. It does not happen
every time we start. Many a times it starts just fine.
We also observed that while cluster is running fine with every node is in UN
mode, after one or two days (time period is not fixed) few nodes goes into DN
mode in nodetool status on their own, even though we are not reading any data
or even writing any data.
We just wanted to know that is there any corner case bug in cassandra that
might be the reason for this kind of behavior?
The version of cassandra server along with all environment information is given
below.
Cassandra server version 2.0.14
JDK version
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
unama -a
Linux 2.6.32-504.16.2.el6.x86_64 #1 SMP Wed Apr 22 06:48:29 UTC 2015 x86_64
x86_64 x86_64 GNU/Linux
blockdev --getra /dev/sdb1 (cassandra data directory)
128
blockdev --getra /dev/sda2 (cassandra commitlog directory)
128
lbs_release -a
LSB Version:
:base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID: CentOS
Description: CentOS release 6.6 (Final)
Release: 6.6
Codename: Final
We are using following version of cassandra on vm with following version of os.
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